Mac at the BC
David,
I didn't get a chance to talk to Mac, but did watch his warmup and then followed him for the first 9 holes this afternoon.  It was unbelievable how he squandered strokes.  True, he hit into 3 fairway bunkers in those 9 holes (all left), but he missed so many short putts! 
On #11, a 230-yard par 3 into the wind, Mac hit a long iron (2?) and before he hit it I knew he didn't have enough club.  The other guys were hitting 5 woods.  Mac came up short right into a sliver of a stream; took a drop and pitched to 5 feet and then proceeded to 4 putt!  The last 2 were under 2 feet and he just stepped up carelessly to tap in, almost not looking where he was going.  He did the same thing on #9 from about 18".  And he missed a 4 footer on #8.  I counted at least 5 shots lost with the putter.  
He also had 4 birds -- all of this irons were crisp and on target.
Brue